Application of zeolite in removing salinity/sodicity from wastewater: A review of mechanisms, challenges and opportunities

Wen, Jia; Dong, Haoran; Zeng, Guangming

doi:10.1016/j.jclepro.2018.06.270

Cited by 156 publications

(54 citation statements)

References 71 publications

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“…The adsorption process is generally related to the nature of the adsorbate and its performance. It also depends on factors such as the specific surface area, organic macromolecular steric hindrance, heterogeneous adsorption sites, and the interaction between adsorbent and adsorbate, as well as the surface charge of the adsorbent [ 48 , 49 ]. The surface charge of calix[6]arene-modified PbS is highly affected by the pH.…”

Section: Resultsmentioning

confidence: 99%

Adsorption of Methylene Blue Dye by Calix[6]Arene-Modified Lead Sulphide (Pbs): Optimisation Using Response Surface Methodology

Rosly

Abdullah

Kamarudin

et al. 2021

IJERPH

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Lead sulphide (PbS) modified with calix[6]arene was synthesised as an alternative and regenerative adsorbent for the adsorption of methylene blue (MB) dye. The prepared calix[6]arene-modified PbS was characterised via Fourier-transform infrared spectroscopy, field emission scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The response surface methodology (RSM) based on the central composite design (CCD) was employed to identify the most significant factors, such as the initial concentration, adsorbent dosage, pH, and temperature, and to optimise the effects of the factors on the adsorptive efficiency as its response. The optimised initial concentration, adsorbent dosage, pH, and temperature were 20.00 mg/L initial concentration, 44.00 mg calix[6]arene-modified PbS, pH 6, and a temperature of 31.00 °C. A good correlation between the values and well-fitted model was observed. The adsorption performance was evaluated based on the percentage removal of MB dye from the water system. The adsorption isotherm best fit the Langmuir isotherm model, and the adsorption rate was followed by a pseudo-second-order kinetic model, a single layer chemical adsorption with a maximum adsorption capacity (qmax) of 5.495 mg/g.

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Section: Resultsmentioning

confidence: 99%

Adsorption of Methylene Blue Dye by Calix[6]Arene-Modified Lead Sulphide (Pbs): Optimisation Using Response Surface Methodology

Rosly

Abdullah

Kamarudin

et al. 2021

IJERPH

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“…The current physicochemical treatment technologies for saline wastewater include capacitive deionization, membrane separation, ion exchange, and electrodialysis [6][7][8][9][10]. These processes, however, are costly and require control measures against secondary contamination; thus, they are only applicable under specific conditions.…”

Section: Introductionmentioning

confidence: 99%

The effects of high salinity on nitrogen removal and the formation characteristics of aerobic granular sludge

Kim

Ahn

2019

Environmental Engineering Research

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This study investigated the biological treatment of high-salinity wastewater using aerobic granular sludge (AGS). The removal performance, AGS characteristics, and microbial community were examined under salinity conditions ranging from 0.5 to 3.0 wt.%. When the salinity was increased, the removal efficiency of the chemical oxygen demand did not change substantially. The mean removal efficiency of NH4+-N ranged from 43.7 to 72.6% during the operation period. As for the concentration of extracellular polymeric substances (EPS), the polysaccharide/protein (PS/PN) ratio increased from 0.37 to 0.57. The concentrations of the mixed liquor suspended solid (MLSS) and mixed liquor volatile suspended solid (MLVSS) were 4,560 and 3,170 mg/L, respectively, in the end phase, and the MLVSS/MLSS ratio decreased from 0.81 to 0.69. The sludge volume index (SVI30) decreased linearly from 88 to 58 mL/g. In the microbial community analysis, Nitrosomonas species accounted for 22.9% of the total bacteria in the initial phase, whereas Halomonas accounted for 43.2% in the end phase. Hence, the gradually increased salinity appears to facilitate the dominance of halophilic microorganisms in the long-term operation of an AGS-based biological treatment system and the stable retention of AGS.

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“…[45][46][47] Thus, the load and treatment efficiency of the reactor are Due to the unique structure, the IC reactor also has excellent performance under high load. 50) IC reactors can often handle At present, the research hotspots of high-efficiency anaerobic reaction process of high-salt organic wastewater mainly include high-efficiency reactors [53][54][55][56][57][58][59][60][61][62][63][64][65] , bio-enhancement [66][67][68][69][70][71][72][73] , etc.…”

Section: Suspended Sludge Granulation Technologymentioning

confidence: 99%

“…Bio-enhancement includes application research of new biological carriers [66][67][68][69] , selection of inoculated sludge 63,[70][71][72][73] showed that AnBEMR enhanced with a carrier exhibited good processing performance, which was about 5-10% higher TCOD removal rate and about 15% higher methane yield than AnMBR without carrier enhancement. In addition, marine sediment was used to replace traditional activated sludge.…”

Section: Suspended Sludge Granulation Technologymentioning

confidence: 99%

Analysis of Key Technologies for Industrialized Treatment of Fatty Acid High-Salinity Organic Wastewater

Lu¹,

Jeong²,

Yan³

et al. 2020

J Korean Soc Environ Eng

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Objectives : Wastewater produced by fatty acid production contains high concentration of organic substances and high concentration of salts (mainly sodium sulfate), causing great pollution to water resources and environment. The pollution prevention and control of this type of wastewater are very necessary. The key to treating this type of wastewater is to remove salts and COD to achieve harmless treatment. This is a problem in wastewater management that has plagued the industry for a long time. This paper proposed a technique suitable for fatty acid high salinity organic wastewater.Methods : First, the industrial treatment technology of organic wastewater with high salinity was introduced and analyzed. Combined with the principle of industrial wastewater treatment, the process route for the treatment of fatty acid high salinity organic wastewater was analyzed and selected. In addition, the key technology and process for anaerobic desalination and COD removal were analyzed and selected.Results and Discussion : According to the unique nature of this type of wastewater mainly containing sulphate salts and the feasibility of industrial production, a special technology combination was proposed to treat this wastewater at this stage. Since this wastewater has a B/C ratio of 0.4 to 0.45, it is easier to use biological treatment method. Thus, the conventional treatment method is pretreatment + biological treatment. Biological enhancement and reactor process optimization can be studied for better efficiency.Conclusions : Considering the high COD and sulphate concentration characteristics of fatty acid high-salinity organic wastewater, high-efficiency anaerobic biochemical treatment is mainly considered. Combined with modern high-efficiency anaerobic suspended sludge granule technology, it was concluded that pretreatment + high efficiency IC anaerobic + secondary biological treatment can achieve industrialized treatment of such wastewater in a targeted, low-cost and reliable way. In the later stage, bio-enhancement of the anaerobic process as well as structural and process optimization of the reactor can be carried out to obtain better technical and economic results in production practice.

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Application of zeolite in removing salinity/sodicity from wastewater: A review of mechanisms, challenges and opportunities

Cited by 156 publications

References 71 publications

Adsorption of Methylene Blue Dye by Calix[6]Arene-Modified Lead Sulphide (Pbs): Optimisation Using Response Surface Methodology

Adsorption of Methylene Blue Dye by Calix[6]Arene-Modified Lead Sulphide (Pbs): Optimisation Using Response Surface Methodology

The effects of high salinity on nitrogen removal and the formation characteristics of aerobic granular sludge

Analysis of Key Technologies for Industrialized Treatment of Fatty Acid High-Salinity Organic Wastewater

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